Portable Cooling Chamber Having Radiant Barrier and Cooling System

ABSTRACT

A compact radiant barrier with applied cooling systems. In accordance with one embodiment, the invention may comprise a folding chair characterized as having a top radiant barrier and deployable radiant barriers on either side as well as the front and rear of the chair. The side radiant barriers are deployable extending down to the chair arms and even below. The invention may further comprise a forced air cooling fan that may be disposed on the lower surface of top component of the chair, in which the top component also operates as a radiant barrier, i.e., a reflective material such that solar radiation is not absorbed but is reflected back into the atmosphere. It is a further aspect of the invention that various elements of the radiant barrier, especially the top barrier, further comprise insulating properties.

CROSS REFERENCE TO RELATED APPLICATIONS

This patent application claims the benefit of the provisional patentapplication assigned application No. 61/779,824, filed on Mar. 13, 2013,and entitled Compact Portable Radiant Barrier with Applied CoolingSystems, which is incorporated by reference herein in its entirety.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable.

INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISK

Not applicable.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to the field of portable cooling chamberscomprising, in its various embodiments, one or more of radiant barrierscooling systems applied to, for example, a lawn chair or other outdoorapparatus. More specifically, the cooling chamber of the inventionprovides solar radiation shielding, forced air cooling, forced fluidmist cooling, and an insulated fluid reservoir that is, preferably,maintained below the ambient temperature of the surrounding environmentto provide more efficient mist cooling than is otherwise achievable withambient-temperature misting. Typical applications for the portablecooling chamber, as examples and not by way of limitation, include lawnchairs and similar structures which are typically used in outdoorenvironments during hot weather such as visits to the beach, concerts,rallies, festivals, sporting events, and the like.

2. Background Art

Increased temperatures in hot outdoor settings are typically caused by acombination of two major effects: 1) the impact of solar radiation on asubject, causing the subject to absorb energy from the radiation; 2) thehigh ambient temperatures that can be present during the hot months ofthe year; and 3) high humidity. The combination of these three effectscan lead to severe discomfort for an individual in such a setting andcan even pose a health risk due to extreme heat. Hyperthermia may resultin such situations and further serious health effects, up to andincluding heat stroke, can occur. On a clear day, solar radiation mayreach levels exceeding 240 w/m̂2.

Portable solar shielding systems for personal use that are usable toblock solar radiation have been known in the art for some time. Forexample simple umbrellas or similar structures are often used as a sunshade to prevent solar radiation from impinging on a person whileoutdoors. While such simple structures can be effective in blockingsolar radiation, they fail to lower the ambient temperature beneath theumbrella. Thus, a subject using a simple umbrella may be shielded fromdirect solar loading, but will not experience a reduction in ambienttemperature. Furthermore, most umbrellas are not radiant barriers. Thusthey absorb solar energy, rather than reflect it, and re-radiate it fromall their surfaces, including the downward facing surface, which usuallyfaces the user. Thus, some of the incident solar radiation is absorbedby the umbrella and re-radiated downward onto the subject, actuallyraising the temperature of the subject above ambient. On hot days, theambient temperature may be in excess of 90-100 degrees, depending onlocation, time of year, and other factors. Thus, simple umbrellas, whileblocking solar radiation, are not extremely effective in reducing thetemperature of a subject.

Other personal systems that employ small air-moving elements such asbattery powered fans have been developed. These systems may, forexample, comprise baseball caps with small integrated fans that may beworn while outdoors such as at concerts, sporting events, and the like.However, the small solar shielding provided by the bill of the baseballcap is practically insignificant as it does not block solar radiationentering from the surrounding environment. Furthermore, such caps mayfit tightly on the head, causing an insulating effect and trapping bodyheat underneath the cap. Also, the small air-moving elements such asbattery-powered fans which are elements of such devices are typicallyinsufficient to move enough air to provide any significant coolingeffect. Such caps, like the umbrella example, even with integrated smallbattery-powered fans, fail to reduce the ambient temperature surroundingthe user.

Still further, personal misting systems have been developed that supplya mist created from a fluid that is passed through an orifice underpressure and directed at or near the user. Such systems may, in theright environment, provide a reduction in ambient temperature by theevaporation of the mist in the surrounding atmosphere. As the waterdroplets of the mist evaporate, a cooling effect is achieved that isproportional to the rate of evaporation. However, the systems of theprior art do not simultaneously provide solar shielding and air movementto achieve a cooling effect. Furthermore, the personal misting systemsof the prior art typically comprise ambient temperature fluids, whichare less effective for temperature reduction than fluids that aremaintained below the ambient temperature.

A further drawback of the personal cooling systems of the prior art isthat they are typically not controllable for the purpose of adjustingthe ambient temperature for the user. Thus, they are static systems andhave no method or mechanism for effectuating adjustment of the coolingthey provide.

It is well-established that the primary mode of absorption of thermalenergy from solar radiation is due to the absorption of energy in theinfrared portion of the spectrum. Infrared (IR) light is electromagneticradiation with longer wavelengths than those of visible light, extendingfrom the nominal red edge of the visible spectrum at 0.74 micrometers(μm) to 0.3 mm. This range of wavelengths corresponds to a frequencyrange of approximately 430 down to 1 THz and includes most of thethermal radiation emitted by objects near room temperature. Infraredlight is emitted or absorbed by molecules when they change theirrotational-vibrational movements. Much of the energy from the sunarrives on Earth in the form of infrared radiation. Sunlight at zenithprovides an irradiance of just over 1 kilowatt per square meter at sealevel. Of this energy, 527 watts is infrared radiation, 445 watts isvisible light, and 32 watts is ultraviolet radiation. Of these spectra,infrared radiation is the significant component that, when absorbed,results in a rise in the thermal temperature of the body.

It is therefore desirable that infrared radiation be reflected ratherthan absorbed, if it is desired to reduce the thermal load on an object.One material that is an effective reflector of infrared radiation isaluminum. In fact, aluminum surfaces may reflect up to 95% of theincident infrared radiation. Furthermore, aluminum may be fabricated inthin foils that have a very low thermal mass, and therefore are notefficient conductors for heat transfer, particularly when only 5% of theincident infrared radiation on an aluminum surface is absorbed. Suchthin aluminum foils may further be attached to insulative materials suchas air-filled bubble insulators, foam, cloth insulators or insulators ofother types and may therefore provide not only reflective properties,but insulative properties as well. In addition to the excellentreflection characteristics of aluminum in the infrared wavelengths, itis to be noted that aluminum has a poor emissivity at these samewavelengths. This means that aluminum is a poor radiator of heat on the“cool side” of the foil, which is to say, the non-radiated side of thefoil. Thus, aluminum has two significant properties that make it anexcellent radiant barrier material: 1) it reflects infrared energy at avery high rate and 2) it resists re-radiating any absorbed energy on thenon-radiated side.

What is needed therefore is a system and apparatus that combines aradiant barrier that reflects radiation, especially infrared radiation,provides insulative properties to reduce heat transfer from innerradiated surface to the user, a misting system that utilizes reducedtemperature fluid, and forced air cooling, all contained in a compacttransportable apparatus suitable for carrying and deploying by the userwithout utilizing tools or requiring significant set-up and tear-downtime, and is adjustable by the user such that it accommodates a varietyof environments and personal preferences.

BRIEF SUMMARY OF THE INVENTION

The present invention provides a solution for the shortcomings of theprior art as described above. The present invention comprises a systemand/or method that has one or more of the following features and/orsteps, which alone or in any combination may comprise patentable subjectmatter.

In accordance with one preferred embodiment of the present invention,the invention may comprise a folding chair characterized as having a topradiant barrier and deployable radiant barriers on either side, andfront and back, of the chair which are deployable extending down to thearms of the chair and even below, depending on the embodiment employed.The invention may further comprise a forced air cooling fan which may bedisposed on the underneath side of a top surface of the invention andprovides forced convection cooling (moving air over the occupant'sbody), in which the top surface also operates as a radiant barrier onits upper surface using, preferably, reflective material such that solarradiation is not absorbed, but is rather reflected back into theatmosphere. It is a further aspect of the invention that variouselements of the radiant barrier, especially the top, further compriseinsulative properties such as those exhibited by, for instance, airfilled bubble insulators. Such insulators provide resistance to thermalheat transfer. It is also preferred that the deployable radiant barrierson either side and front and rear of the chair deploy on the externalsurfaces radiant coverings that reflect radiation back into theenvironment. It is a further aspect of the invention that the radiantbarriers of the invention may comprise aluminum reflective surfaces,especially very thin lightweight aluminum sheets or coatings.

A further aspect of the invention is a misting device which is operatedby a pump that, preferably, further comprises controls allowing a userto adjust the timing of the pump on and off states, such that a user mayadjust the mister so that it provides periodic misting at a rateselected by the user. In this manner, a user may adjust the coolingprovided by the misting system to match the particular temperature andother environmental factors of the day, and to also meet the user'spersonal preferences regarding the cooling effect of the invention(i.e., too cool or too warm). The invention may further comprise aninsulated reservoir which may be utilized to store fluid to be used inthe misting system. This insulated reservoir may be cooled by the use ofgel bladders that have been previously reduced in temperature byplacement in a refrigeration system such as a freezer or refrigerator.In this manner, the fluid that is utilized in the misting system maycomprise a reduced temperature fluid, typically water, increasing theeffectiveness of the temperature-reducing aspects of the invention. Ithas been established that water at a temperature below the ambient airabsorbs more heat energy prior to vaporization than water at, or above,ambient temperature. Evaporative cooling is a physical phenomenon inwhich evaporation of a liquid, typically into surrounding air, cools anobject or a liquid in contact with it. Latent heat describes the amountof heat needed to evaporate the liquid. This heat comes from the liquiditself and the surrounding gas and surfaces. The greater the differencebetween the two temperatures, in this case ambient air and water, thegreater the evaporative cooling effect. However, when the temperaturesare at or near equal in value, and the air is saturated to near 100%humidity, heat transfer by vaporization is greatly diminished. It istherefore important that when these conditions exist, the use of cooledwater, at a temperature below the ambient air temperature, can be mosteffective. Heat transfer only occurs where there exists a temperaturedifferential forcing the flow from the high to the low temperatureregion.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated into and form a partof the specification, illustrate one or more embodiments of the presentinvention and together with the description, serve to explain theprinciples of the invention. The drawings are only for the purpose ofillustrating the preferred embodiments of the invention and are not tobe construed as limiting the invention. In the drawings:

FIG. 1 depicts a front perspective view of a preferred embodiment of theinvention with one side radiant barrier deployed.

FIG. 2 depicts a rear perspective view of a preferred embodiment of theinvention.

FIG. 3 depicts a front perspective view of a preferred embodiment of theinvention installed on a folding chair and placed into a storedposition.

FIG. 4 depicts a front perspective view of a preferred embodiment of theinvention with the top radiant barrier deployed and no side radiantbarriers deployed.

FIG. 5 depicts a front perspective view of a preferred embodiment of theinvention with the top radiant barrier deployed and one side radiantbarrier deployed.

FIG. 6 depicts a front perspective view of a preferred embodiment of theinvention with the top radiant barrier deployed and two side radiantbarriers deployed.

FIG. 7 depicts a front perspective view of a preferred embodiment of theinvention with the top radiant barrier deployed, two side radiantbarriers deployed and the front radiant barrier partially deployed.

FIG. 8 depicts a front perspective view of a preferred embodiment of theinvention with the top radiant barrier deployed, two side radiantbarriers deployed, and the front radiant barrier fully deployed.

FIG. 9 depicts a block diagram of the cooling fan, pump, battery,mister, and pump controller of a preferred embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

The following documentation provides a detailed description of theinvention.

Referring now to FIG. 1, a front perspective view of the invention isshown installed on a typical folding chair 100, which comprises foldingchair first arm 101, folding chair second arm 102, folding chair back103, and folding chair seat 104. The compact radiant barrier system 200of the invention is releasably attached to the chair back 103 of foldingchair 100. In the perspective view shown in FIG. 1, the compact radiantbarrier system 200 of the invention is shown in a deployed state with atop radiant barrier 210 (see FIG. 2) and a first side radiant barrier201 deployed. As shown, the top radiant extends forwardly from thefolding chair back 103. The bottom inside surface of first side radiantbarrier 201 may comprise hook and loop fasteners, such as, for instance,Velcro®, which may be placed in such a position as to contact matchinghook and loop fasteners which may be bonded into place on the side offolding chair first arm 101. In this matter, the bottom inside surfaceof first side radiant barrier 201 may be releasably attached to foldingchair first arm 101.

Still referring to FIG. 1, headrest 205 may be releasably or permanentlyattached to back cover 211 by any means known in the art, including butnot limited to stitching, hook and loop fasteners, or any otherattachment means as would be understood by a person of ordinary skill inthe art. Top support structure 216 may extend around the periphery onthe underneath side of top radiant barrier 210 (not shown in FIG. 1, butshown in FIG. 2) to provide support for top radiant barrier 210 andcooling fan 206 by means of lateral support tubes 217. Top supportstructure 216 and lateral support tubes 217 may comprise any lightweightstructural material as is known in the art, including but not limited tolightweight aluminum tubing which may be bonded, welded, or attachedinto place using any other means known in the art for attaching suchstructures. Alternatively, threaded fasteners may be used. Cooling fan206 may be attached to lateral support tubes 217 by tying, cable ties,or any similar structure suitable for joining cooling fan 206 to lateralsupport tubes 217. The means of attachment of cooling fan 206 thelateral support tubes 217 is not to be considered a limitation of theinvention, as there are many equivalent attachment means and structuresknown to persons of ordinary skill in the art.

Still referring to FIG. 1, front radiant barrier 203 is rolled up andstowed on the upper surface of the top radiant barrier 210 (not shown inFIG. 1, but shown in FIG. 2), as is second side radiant barrier 202.First side support 208 and second side support 209 are rotatablyattached to top support structure 216 and may contain side support pins218 which are used to capture the bottom end of first side support 208and the bottom end of second side support 209 using receiving structure219 as shown. When it is desired to rotate the compact radiant barriersystem 200 of the invention into a stored position, side support pins218 are removed from receiving structure 219, which allows the upperportion of the invention comprising the top radiant barrier 210 androlled-up first side radiant barrier 201, second side radiant barrier202 and front radiant barrier 203 which are captured onto the top sideof top radiant barrier 210 to rotate backwards into such a position asto be enclosed proximal contact with the rear surface of folding chairback 103. In this manner, the compact radiant barrier system 200 of theinvention may be compactly configured into a stowed position such thatfolding chair 100 may be folded and the entire unit easily carried andtransported to a desired location. A view depicting the compact radiantbarrier system 200 of the invention configured into a stowed position ispresented in FIG. 3 in the drawings.

Still referring to FIG. 1, mister head 207, which comprises a misterorifice (in one embodiment having a diameter of about 5 microns) throughwhich pressurized fluid is forced causing a misting effect, is locatedin proximity to cooling fan 206 and is held in place by cable ties orother equivalent structures. Mister head 207 is attached to mistertubing 212 on the underside which traverses the top radiant barrier 210in a secure manner such that when the upper portion of the invention isrotated back into a stored position, mister tubing 212 is not cramped orotherwise damaged. Mister tubing 212 traverses along the rear surface offolding chair back 103 where it terminates into mister pump 214 (notshown in FIG. 1, but shown in FIG. 2). Mister pump 214 operates to pumpfluid from a fluid reservoir disposed in pockets 220 disposed in backcover 211, through mister tubing 212 to mister head 207. Typically, thefluid used for the mister system of the invention is water, although anysuitable fluid may be used for misting.

Referring now to FIG. 2, the compact radiant barrier system 200 of theinvention is shown in a deployed state with first side radiant barrier201 and second side radiant barrier 202 rolled-up and held in place ontop of top radiant barrier 210. In this view it can be seen that misterpump controller 213 and mister pump 214 reside in pockets 220 disposedon the rear surface of back cover 211. Also disposed in pockets 220 is areservoir 221 (not shown in FIG. 2). Mister tubing 212 exits mister pump214, traversing along the rear surface of back cover 211 to theunderside of top radiant barrier 210 where it traverses the underside oftop radiant barrier 210 and terminates at mister head 207 (not shown inFIG. 2, but shown in FIG. 1) as hereinbefore described. Mister pumpcontroller 213 operates to control the timing of mister pump 214 byadjustment of mister pump controller knob 222. Mister pump controller213 and mister pump 214 are further powered by batteries which may beinternal to mister pump 214 or may be external batteries. By adjustingmister pump controller knob 222, a user of the compact radiant barriersystem 200 of the invention may adjust the level of cooling applied bythe mister head 207 to meet the ambient environmental conditions whichmay comprise various solar loadings and ambient temperatures.Furthermore, reservoir 221 is preferably an insulated reservoir whichcontains the mister fluid, preferably water, and which may be furthercooled by the application of gel pack coolers as is known in the art.Such gel pack coolers may be pre-cooled to a low temperature by placingin a freezer or refrigerator until time for use. Cooling productscommercially referred to as instant cold packs (containing water andammonium nitrate, calcium nitrate, calcium ammonium nitrate, calciumammonium nitrate or urea) can also be used to cool the misting fluid dueto the endothermic reaction that occurs when water is mixed with one ofthe listed chemical compounds. The reaction absorbs heat from itssurroundings, quickly lowering the packs temperature. When it is desiredto use the compact radiant barrier system 200 of the invention, the gelpack coolers may be removed from refrigeration or freezing and placedalongside the fluid reservoir 221 (not shown in FIG. 2) in pockets 220in order to reduce the temperature of the fluid presented to mister head207. In this manner, the reduced temperature mister fluid is used toachieve lower temperatures within the interior of the compact radiantbarrier system 200 of the invention than is achievable by the systems ofthe prior art.

Still referring to FIG. 2, incident solar radiation 301 is reflectedback into the atmosphere by the reflective upper surface of top radiantbarrier 210. The preferred embodiment of top radiant barrier 210comprises an aluminum foil reflective surface and an air bubbleinsulative core, such that a maximum of incident solar energy 301 isreflected 302 back into the atmosphere and very little heat istransferred inductively through top radiant barrier 210 to the undersideof the compact radiant barrier system 200 of the invention.

Referring now to FIG. 3 through FIG. 5, a progression of steps deployingthe compact radiant barrier system 200 of the invention is shown.Referring first to FIG. 3, folding chair 100 is shown with the compactradiant barrier system 200 rotated back into a stored position. In thestored position, the compact radiant barrier system is placed out of theway so as not to hinder use of the chair in any manner. In fact, thechair may be folded as is typical of such chairs and may thus easily becarried to a new location or stored for later use. Referring next toFIG. 4, the compact radiant barrier system 200 of the invention has beendeployed such that only top radiant barrier 210 is in place, and firstside radiant barrier 201 (not shown in FIG. 4), second side radiantbarrier 202 and front radiant barrier 203 are rolled up and stored onthe top side of radiant barrier 210. Referring next to FIG. 5, firstside radiant barrier 201 has been deployed and its lower edge has beensecured into place on folding chair first arm 101. In this manner, thecompact radiant barrier system of the invention may be oriented such asto block radiation coming from the side of first side radiant barrier201 and also to prevent a side wind from causing loss of any coolingeffect of the misting system of the invention.

Referring next to FIG. 6, second side radiant barrier 202 has beendeployed enabling further radiant energy protection and increasing theeffectiveness of the misting and cooling fan systems of the invention byvirtually eliminating any cross flow caused by the wind or othereffects. Referring now to FIG. 7, front radiant barrier 203 has beenpartially deployed resulting in further radiant barrier and insulativeproperties, and further increasing the effectiveness of the misting andcooling fan systems of the invention by virtually eliminating any crossflow caused by the wind or other effects. Finally, referring to FIG. 8,front radiant barrier 203 is fully deployed. In this position, thecompact radiant barrier system 200 of the invention offers virtuallycomplete protection from solar radiation and wind, and further resultsin a cooling chamber which is further cooled by cooling fan 206 (notshown in FIG. 8) and the misting system of the invention. In any of thepresented embodiments, tinted window material can be inserted into oneor more of the various radiant barriers to permit an occupant of thecooling chamber to see outside the cooling chamber.

Referring now to FIG. 9, a block diagram of a preferred embodiment ofthe invention is depicted. Mister pump 214 is in electricalcommunication with at least one battery 223 and mister pump controller213. At least one battery 223 provides power to mister pump controller213 and mister pump 214, as well as cooling fan 206, which may beoperated by function of an ON/OFF switch. Electrical communication isachieved by the use of standard wiring techniques, which may includeelectrical connection by splicing, terminal blocks, soldering orcrimping connections as is known by persons of ordinary skill in theelectro-mechanical arts. Mister pump controller 213 may comprise misterpump controller knob 222 or equivalent controls that operate a timerfunction that, at the user's desire, may be used to either operate themister of the invention continuously or on a timed ON/OFF basis, with atime interval set as chosen by the user. Cooling fan directs air flowonto the user, and mister head 207 provides mist by the forcing ofcooling fluid, preferably chilled water, through an orifice in misterhead 207, creating a cool evaporative mist that results in a reducedtemperature in the surrounding atmosphere. Sump 224 is disposed at thebottom of tubing that provides a path for cooling fluid from reservoir221 to mister pump 214, which is then pumped to mister head 207 viamister tubing 212.

The radiant barriers of the invention, which comprise top radiantbarrier 210, first side radiant barrier 201, second side radiant barrier202, front radiant barrier 203 and rear radiant barrier 204 preferablyare fabricated from insulative materials, such as air filled bubbleinsulator with radiant barrier outer layers, that are further adapted toreceive aluminum foil covering such as to provide a radiant barriersurface with an insulative inner core. While this is the preferredembodiment of the invention, there are many other radiant barrierfabrics which exhibit varying degrees of insulative properties which maybe utilized in the compact radiant barrier system 200 of the invention.One such “bubble foil” is manufactured by EcoFoil, which is a divisionof Clickstop, Inc., located in Urbana, Iowa, which consists of a doublelayer of polyethylene bubbles sandwiched between two layers of aluminumradiant barrier foil. Bubble foil, also called foil-faced bubbleinsulation, can be used in a variety of applications because it islightweight and easy to handle yet provides superior insulating value.The bubble center creates maximum R-Value and the reflective foil onboth outside surfaces reflects up to 97% of radiant heat. Because of theair space built between the layers of foil, bubble foil insulation worksto keep radiant heat from penetrating a structure from the outside.

The radiant barriers of the invention, and the back cover, may befabricated using any means of fabrication known in the textile arts suchas stitching, or, alternatively, adhesive bonding or any other means asknown to a person of ordinary skill in the textile arts such as adhesivebacked tape and the like. The means of fabrication of the radiantbarriers and back cover of the invention are not to be construed aslimitation on the breadth and scope of the invention.

The preferred embodiment shown in figures and discussed in thedescription is directed at a folding chair application; however, it isto be noted that the compact radiant barrier and cooling system of theinvention has numerous applications other than the folding chairembodiment discussed herein. For example, the invention may be used tocool chaise lounges, baby carriages and strollers, playpens, personalmobility devices such as scooters, wheelchairs and the like, childtransport devices such as bicycle trailers, toddler play houses andsimilar structures, wheeled child carriages used by joggers, infanttransport devices; pet strollers, portable pet shelters; riding lawnmowers, golf carts, boats of all types including power canoes andkayaks, firefighter and first responder relief stations, application formilitary personnel, disaster relief stations, and for use during poweroutages in which cooling systems may be off line for hours, days orweeks.

Although a detailed description as provided herein contains manyspecifics for the purposes of illustration, anyone of ordinary skill inthe art will appreciate that many variations and alterations to thefollowing details are within the scope of the invention. Accordingly,the following preferred embodiments of the invention are set forthwithout any loss of generality to, and without imposing limitationsupon, the claimed invention. Thus, the scope of the invention should bedetermined by the appended claims and their legal equivalents, and notmerely by the preferred examples or embodiments given.

What is claimed is:
 1. A system for reducing a temperature within aspace, the system comprising: one or more radiant barriers forming asurface of a cooling chamber; a cooling fan disposed on an inside-facingsurface of the cooling chamber; an insulated reservoir for holding amisting fluid; a misting device for spraying the misting fluid into thecooling chamber; wherein activation of one of the cooling fan and themisting device produces a cooling effect for an occupant of the coolingchamber; and a power source for supplying power to at least one of thecooling fan and the misting device.
 2. The system of claim 1 wherein theone or more radiant barriers comprise a top radiant barrier and a firstside radiant barrier, the top radiant barrier deployable forwardly froman upper region of a back of a folding chair and the first side radiantbarrier deployable downwardly from a first side surface of the topradiant barrier, the cooling chamber formed by the top and first sideradiant barriers, the back of the folding chair and a folding chairseat.
 3. The system of claim 2 wherein the cooling fan is disposed on aninterior-facing surface of the top radiant barrier.
 4. The system ofclaim 2 wherein the one or more radiant barriers further comprise asecond side radiant barrier deployable downwardly from a second sidesurface of the top radiant barrier, the first and second side surfacesin opposing relation.
 5. The system of claim 4 the folding chaircomprising first and second arms, wherein the first and second radiantbarriers extend downwardly from the respective first and second sidesurfaces of the top radiant barrier for attachment to the respectivefirst and second arms.
 6. The system of claim 1 removably attached to aback of a folding chair.
 7. The system of claim 1 wherein the one ormore radiant barriers comprise a top radiant barrier and a front radiantbarrier deployable downwardly from a front edge of the top radiantbarrier.
 8. The system of claim 1 wherein the one or more radiantbarriers comprise a reflective material for reflecting solar radiationaway from the cooling chamber.
 9. The system of claim 8 wherein theradiant barrier further comprises an insulating material.
 10. The systemof claim 1 wherein the misting device is located proximate the coolingfan, mist from the misting device impinging air flow from the coolingfan and scattering in the cooling chamber.
 11. The system of claim 1wherein the one or more radiant barriers comprise an aluminum reflectivesurface.
 12. The system of claim 1 further comprising a pump forsupplying the misting fluid under pressure from the insulated reservoirto an orifice of the misting device.
 13. The system of claim 1 whereinthe pump and a user-controllable pump controller for controlling on andoff cycles of the pump are disposed proximate the cooling chamber. 14.The system of claim 1 the misting device comprising an orifice having adiameter of about 5 microns.
 15. The system of claim 1 furthercomprising a temperature of the misting fluid below ambient temperature.16. The system of claim 1 removably attached to a back of a foldingchair and rotatable backwards into proximal contact with a rear surfaceof the back of the folding chair.
 17. The system of claim 1 furthercomprising one of gel packs and instant cold packs proximate theinsulated reservoir for cooling the misting fluid.
 18. The system ofclaim 1 wherein the misting fluid comprises water.
 19. The system ofclaim 1 wherein the power source comprises one or more batteries.
 20. Asystem comprising a radiant barrier for enclosing an open space and acooling system disposed within the open space, the cooling systemfurther comprising a cooling fan and a misting device, mist from themisting device impinging cooling air from the cooling fan, the openspace bounded by one or more radiant barriers.